JPH1028902A - Fluid jetting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to jet a fluid without working by directly holding a nozzle by a worker and also to jet the fluid in multi-directions. SOLUTION: This device is provided with a jetting nozzle 30 for jetting a fluid, an arm 60 supporting the jetting nozzle 30 with bearings, a back and forth moving means for moving the jetting nozzle 30 in the back and forth direction, a traverse direction moving means for moving the jetting nozzle 30 in the direction vertical to the back and forth direction in a horizontal surface, an ascending and descending means for moving the jetting nozzle 30 vertically, a revolution means for rotating the jetting nozzle 30 centering around the axis in parallel to the longitudinal direction of the arm 60 and a fluid feed means 72 for feeding the fluid to the jetting nozzle 30. Without holding the jetting nozzle 30 by the worker, the jetting nozzle 30 enables to be moved freely in three dimensional directions and the jetting direction can be freely controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid ejecting apparatus for ejecting a fluid, and more particularly to an apparatus for ejecting a fluid in a plurality of directions by remote control.

[0002]

2. Description of the Related Art A mold or the like is sometimes cleaned by vigorously spraying a fluid, for example, granular dry ice, onto the inner surface of the mold. In such a cleaning operation, FIG.
(1), the worker directly holds the injection nozzle 10 as shown in FIG. The injection nozzle 10 shown in FIG. 5 is an injection nozzle that mixes and ejects the pressure-fed air and granular dry ice, and is a nozzle main pipe 12.
A first rotary joint 16 for connecting the first feed pipe 14 thereto, and a second feed pipe 18 connected to the nozzle main pipe 12.
And a second rotary joint 20 for connecting the two. The nozzle main pipe 12 includes an ejector 22 having a wide internal space 25 and an elongated internal space 2.
7, and the internal space 25 is rapidly narrowed from the ejector 22 toward the injection pipe 24 in the vicinity of the connecting portion 23. The ejector 22 has a bent shape.
A rotary joint 16 is provided. This first
The first supply pipe 14 connected to a pump for pumping air is connected to the rotary joint 16. In addition, the ejector 22 is provided with a joining pipe 26 provided with a second rotary joint 20 at an end thereof in a straight line with the longitudinal direction of the injection pipe 24. Second rotary joint 20
Has a second dry ice storage tank connected to it
The feed pipe 18 is connected. Thus, this injection nozzle 1
0 indicates that the injection pipe 24 and the second supply pipe 18 are linear, the second supply pipe 18 and the first supply pipe 14 are parallel, and the first supply pipe 14 and the second supply pipe 18 are parallel. The feed pipe 18 can be compactly assembled. The joining pipe 26 passes through the internal space 25 of the ejector 22, and is fixed to the ejector 22 so that the reduced-diameter tip portion 28 is located at the connecting portion 23 of the nozzle main pipe 12. At this time, the outer diameter of the distal end portion 28 of the joining pipe 26 is set to be slightly smaller than the inner diameter of the internal space 25 in the connecting portion 23, and the inner peripheral space of the connecting portion 23 and the peripheral surface of the distal end portion 28 are set. A narrow gap is formed between the inner wall surface and the inner wall surface.

In order to use such an injection nozzle 10, air is pressure-fed from a first supply pipe 14 to a nozzle main pipe 12 while granular dry ice is supplied from a second supply pipe 18. Then, the air flows into the internal space 25 of the ejector 22.
After passing through a narrow gap at the distal end portion 28 of the joining pipe 26, the fuel is injected from the distal end of the injection pipe 24. At this time, the granular dry ice from the second feed pipe 18 passes through the joining pipe 26 and is mixed with the air being pressure-fed at the tip 28 of the joining pipe 26, and then from the tip of the injection pipe 24. It is injected vigorously.

[0004]

By the way, when the cleaning work must be performed while the mold is still hot,
In addition, since dust is blown off by injecting the fluid, when the worker approaches the mold with the nozzle and performs work, the worker may be burned, or the worker may inhale the dust or the dust may be removed. There is a possibility that it adheres to the worker, and such work is not desirable in terms of the working environment and the like. In addition, when the upper mold and the lower mold to be cleaned cannot be largely separated from each other, if the work is performed by the above-described manual operation, there is a limit in reaching out and a blind spot may occur. For this reason, it was not easy to perform uniform and sufficient cleaning without unevenness. In addition, when trying to change the injection direction of the injection nozzle, the first supply pipe 14 and the second supply pipe 18 and the like greatly swing in accordance with the movement, and they may come into contact with peripheral devices. Therefore, the worker has to avoid such a problem.
It is necessary to pay attention not only to the injection nozzle but also to the first feed pipe and the second feed pipe, and to secure a wide moving area thereof, which may reduce the working efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a fluid ejecting apparatus capable of ejecting a fluid in multiple directions without an operator directly holding a nozzle to perform an operation. It is.

[0006]

According to the present invention, there is provided a fluid ejecting apparatus for ejecting a fluid, an arm supporting the ejecting nozzle, an ejection changing means for changing the ejecting direction of the ejecting nozzle, and an ejecting means. Forward-backward moving means for moving the nozzle in the front-rear direction, lateral moving means for moving the injection nozzle in a direction perpendicular to the front-rear direction in the horizontal plane, elevating means for moving the injection nozzle up and down, and the longitudinal direction of the arm It is characterized by comprising a swirling means for rotating the injection nozzle about a parallel axis and a fluid supply means for supplying a fluid to the injection nozzle.

In the present invention, a fluid refers to a fluid material that can be ejected from a nozzle, and is not limited to a gas or a liquid, but includes a solid such as a fine substance such as a granular substance. Shall be considered.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the fluid ejecting apparatus of the present invention,
By remote control, the ejection nozzle that ejects the fluid can be moved forward or backward, both left and right, up and down, and the ejection direction of the ejection nozzle can be freely controlled, so even if the operator does not have the ejection nozzle directly. Also, even when the working range is narrow, the fluid can be ejected safely and in all directions. Hereinafter, a fluid ejection device of the present invention will be described with reference to the drawings. In the fluid ejection device 50 of the present invention illustrated in FIGS.
0, a cylindrical arm 60 having the ejection nozzle attached to the tip, an ejection diverting means for changing the ejection direction of the ejection nozzle, a forward / backward moving means for moving the ejection nozzle in the front-back direction, and an ejection nozzle. Lateral moving means for moving in the horizontal direction perpendicular to the front-rear direction, elevating means for moving the injection nozzle up and down, turning means for rotating the injection nozzle about an axis along the longitudinal direction of the arm 60, and Fluid supply means for supplying a fluid. These are unitized and arranged collectively on a base 52 on which the casters 51 are provided.

First, two parallel rails 53, 53 arranged on the base 52 in the front-rear direction, that is, along the longitudinal direction of the arm 60, on the base 52, , And a forward / backward drive device (not shown) for driving the forward / backward moving table 54 are provided. The forward / reverse driving device is composed of a servomotor or the like, is attached to the forward / backward moving base 54,
The forward / backward moving table 54 sliding on 53 is moved forward or backward, and the injection nozzle 30 attached to the tip of the arm 60 disposed above the forward / backward moving table 54 is moved in the forward / backward direction. And, as the lateral moving means, two parallel rails 55, 55 arranged vertically on the rail 53 on the forward and backward moving table 54, a lateral moving table 56 moving on the rail 55, A lateral driving device 57 for driving the direction moving table 56 is provided. In the illustrated example, the lateral driving device 57 includes a ball screw 59 engaged with a slider (not shown) provided on the lateral moving table 56, a servo motor 61, and a driving force of the servo motor 61.
, And the ball screw 59 is rotated by the driving force of the servomotor 61 so that the horizontal moving table 56 can move freely in the left-right direction, that is, in the horizontal direction perpendicular to the front-rear direction. The injection nozzle 30 attached to the tip of the arm 60 provided above the horizontal moving table 56 moves in the horizontal direction.

Further, as the elevating means, the horizontal moving table 5 is used.
6, vertical rails 66, 66 standing on the
An elevating body 58 that moves up and down along 6 and rotatably supports an arm 60 extending in the horizontal direction, and an elevating drive device 67 that moves the elevating body 58 up and down are provided. The elevating drive device 67 in the illustrated example is roughly constituted by a ball screw 68 in which a slider (not shown) provided on the elevating body 58 is engaged, and a servo motor 69, and the ball screw 68 is driven by the servo motor 69. The injection nozzle 3 is attached to the tip of an arm 60 supported by the elevating body 58 so that the elevating body 58 rotates freely in the vertical direction.
0 moves up and down. Therefore, according to the fluid ejection device 50, the arm 60 or the ejection nozzle 30 attached to the tip thereof can be three-dimensionally moved by the forward / backward moving table 54, the lateral moving table 56, the elevating body 58, and the like. Have been. The injection nozzle 30 is rotatably supported at the tip of the arm 60, and the arm 6 is connected to the other end of the arm 60.
A turning means 64 for rotating 0 is provided. The turning means 64 in the illustrated example includes a geared motor 70 and a belt 7 for transmitting the driving force of the geared motor 70 to the arm 60.
1, the spray nozzle 3 attached to the tip of the arm 60 when the arm 60 rotates.
Numeral 0 rotates around the arm 60.

As shown in FIG. 3, the ejecting nozzle 30 includes an ejector 32, rotary jets 34 and 36 provided on both sides of the ejector 32, and an ejecting tube 38 provided at the tip of the ejector 32. What is provided can be applied. An internal space 44 having an open front end is formed inside the ejector 32, and the internal space 44 is connected to the internal passage 4 of the injection pipe 38 connected to the front of the ejector 32.
Continues with 5. In the ejector 32, a first joint pipe 40 and a second joint pipe 42 are provided so as to protrude to the side of the ejector 32, and these are formed on the same axis. In this example, the first joint pipe 40 and the second
The joining pipe 42 projects perpendicularly to the longitudinal direction of the injection pipe 38, and is formed in a T-shape with the first joining pipe 40, the second joining pipe 42, and the ejection pipe 38 with the ejector 32 as a center. The first joining pipe 40 communicates with an internal space 44 formed inside the ejector 32. The second joint pipe 42 is bent in the internal space 44, and the reduced diameter end portion 43 faces forward. At the distal end 43 of the second joining pipe 42, the internal space 44 is rapidly reduced in diameter, and at the distal end of the second joining pipe 42, the outer diameter of the distal end 43 of the second joining pipe 42 is equal to the inner diameter of the inner space 44. A smaller gap 46 is formed between them.

A rotary junction 34 is provided at the end of the first joining pipe 40.
Is connected to the first feed pipe 15, and similarly, the second feed pipe 4
A rotary junction 36 is provided at an end of the second 2, and the second feeding pipe 19 is connected to the rotary junction 36. Therefore, the first feed pipe 15 and the second feed pipe 19
Are connected to the ejector 32 on the same axis. The first supply pipe 15 and the second supply pipe 19 are not particularly limited, such as a flexible resin pipe and a rigid metal pipe. In addition, the first supply pipe 15 and the second supply pipe 19 are formed with bent portions 17 and 21 at positions outside and near the respective rotary junctions 34 and 36 so as to be directed rearward. Is preferred. The rotary junction 34 connects the first connection pipe 40 and the first supply pipe 15, and the rotary junction 36 connects the second connection pipe 42 and the second supply pipe 19.
And a pipe joint for relatively rotatable connection. The injection tube 38 is for injecting the fluid mixed by the ejector 32 toward a target, and its length is appropriately set according to the application, or a plurality of injection tubes can be connected and extended. . Further, the injection pipe 38 does not necessarily need to be separate from the ejector 32, and may be integrated with the ejector.

With such an injection nozzle 30, for example, in order to mix and inject air and granular dry ice, air is pressure-fed from the first feed pipe 15 to the ejector 32, By supplying dry ice from the supply pipe 19, air passes through the narrow gap 46 around the distal end portion 43 of the second joining pipe 42 and sucks dry ice from inside the second joining pipe 42, In a state where air and dry ice are mixed, the air passes through the internal passage 45 in the injection pipe 38 and is injected from the tip. The injection nozzle 30 is fixed to the arm 60 at a first rotary junction 34 and a second rotary junction 36, and the ejector 32 is connected to the rotation axis of the first rotary junction 34 and the second rotary junction 3.
6 is rotatably supported by the arm 60 around a shaft connecting the rotation shafts 6 (hereinafter, referred to as a mounting shaft).

In the vicinity of the tip of the arm 60, a nozzle driving device 62 is provided as a jet turning means.
The piston 63 of the nozzle driving device 62 and the injection nozzle 30
Is connected to a connecting rod 31 attached to the rear of the piston 6 so that the direction of the injection nozzle 30 changes around the mounting axis in accordance with the expansion and contraction of the piston 63.
The so-called swinging motion is made possible so that the injection nozzle 30 is directed rearward when the extension 3 is extended, and is directed forward when the piston 63 is contracted. In the injection nozzle 30, a plurality of feed pipes are connected to an ejector via a rotary joint, and the feed pipes are connected so as to be on the same axis and face each other. Since the nozzle is rotatably supported, only the ejection nozzle can move independently without moving any of the feed pipes, and the ejection direction of the ejection nozzle can be changed. Therefore, the injection nozzle 30
Since a swing motion and a turning motion can be performed, a complex three-dimensional motion can be performed by simultaneously performing these motions.

The fluid ejecting apparatus 50 is provided with a tank for storing the fluid to be ejected and a fluid supply means 72 having a pump for pumping the fluid to the ejection nozzle 30 by pressure. The second supply pipes 19 are connected to the fluid supply means 72, respectively. Further, a control device 74 for controlling the ejection nozzle 30, the ejection diverting means, the forward / backward moving means, the lateral moving means, the elevating means, the turning means, the fluid supply means, and the like is provided. Control device 74
Is provided with a computer and an operation panel. By operating the control device 74, it is possible to control the arrangement of the injection nozzles 30, adjustment of the injection direction, start / stop of injection, flow rate of injection, and the like. Further, by inputting a predetermined program into the control device 74 in advance, the automation of these injection operations can be further enhanced.

The method of using the fluid ejecting apparatus 50 is described by using air and dry ice (for example, cylindrical (diameter: 3 mm, length: 5
mm)) will be described as an example of the case of cleaning the tire mold by spraying the mixed fluid. First, the fluid ejection device 50
Is set such that the mold in which the upper mold and the lower mold are separated from each other is located near the front. Then, the controller 74 is operated to adjust the position of the lateral moving table 56 of the lateral moving means so that the injection nozzle 30 can be positioned at the center of the mold.
The height of the elevating body 58 of the elevating means is adjusted so that 0 can be inserted between the upper mold and the lower mold. Then, the forward / backward moving table 54 of the forward / backward moving means is advanced, and the injection nozzle 30 is inserted between the upper mold and the lower mold so as to be located at the center of the mold. Thus, when the injection nozzle 30 is located at the center of the mold, the position is input to the control device 74 as the center coordinates. Also, the coordinates of the size and shape of the mold are input.

The air supply pump 72 in the fluid supply means 72 is operated (for example, at a pressure of 0.7 MPa) to supply air to the injection nozzle 30 through the first supply pipe 15 while the fluid supply means 72 Dry ice is supplied from the granular dry ice storage tank in the inside to the injection nozzle 30 via the second supply pipe 19, and these are mixed and vigorously injected from the tip of the injection nozzle 30 to the mold. At the same time, while moving the position of the injection nozzle 30 by the forward and backward moving means and the lateral movement means,
Is performed, and the mixed fluid is uniformly sprayed on the entire surface of the lower mold. After the cleaning of the lower mold is completed, the injection nozzle 30 is returned to the center coordinates once, the injection nozzle is turned 180 ° to face upward, and the mixed fluid is uniformly sprayed on the entire upper surface of the upper mold similarly to the lower mold. Perform cleaning. After the cleaning of the lower mold and the upper mold is completed in this way, the forward and backward moving table 54 is retracted, the ejection nozzle 30 is pulled out from between the dies, and the operation is completed.

Therefore, according to the fluid ejecting apparatus 50, the operator can remotely operate the ejecting nozzle 30 without holding the ejecting nozzle 30 in his hand and without approaching the mold to be cleaned.
The fluid can be ejected, and the operation can be performed safely. In addition, the ejection nozzle 30 attached to the fluid ejection device 50 can dispose the ejection nozzle 30 at an appropriate position by moving the arm 60, and swing the ejection nozzle 30 at that position. By performing the operation and the turning operation, the fluid can be ejected in all directions even in a narrow work space, and a blind spot does not occur. Moreover, this injection nozzle 30
In this case, even if the injection direction is moved, the injection nozzle 30
Since the first supply pipe and the second supply pipe connected to the nozzle do not move, they do not hinder the movement of the ejection nozzle 30 in the ejection direction, and there is no restriction. Therefore, even if the working range is narrow, the spraying work can be performed without unevenness.

When the turning operation is performed, the first feed pipe 1
The distance between the turning center of the ejector 32 and the turning center of the ejection pipe 3
It is preferable that the distance is set to be shorter than the distance from the front end 8. As shown in FIG. 4, when the injection nozzle 30 is turned, the turning radius r2 of the bent portion 17 or the bent portion 21 becomes shorter than the turning radius r1 of the injection pipe 38,
This is because the first feed pipe or the second feed pipe does not cause a restriction on the turning operation, and the degree of freedom of turning is further improved.

Although the above description has been made using air and dry ice as the fluid to be ejected, it goes without saying that the invention can be applied to other fluids. In addition, the fluid is not limited to two types, and if there is no restriction on the degree of freedom of the ejection direction of the nozzle,
Three or more fluids may be mixed. In addition, it goes without saying that the present invention can be applied to uses other than the cleaning of the mold.

[0021]

According to the fluid ejecting apparatus of the present invention, the ejecting nozzle can be freely moved three-dimensionally without the operator having the ejecting nozzle, and the ejecting direction can be freely controlled. Work environment is improved, and a uniform and sufficient fluid can be ejected,
Moreover, work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an embodiment of a fluid ejection device according to the present invention.

FIG. 2 is a side view showing the fluid ejection device.

FIG. 3 is a plan view illustrating an embodiment of an injection nozzle.

FIG. 4 is a front view showing the movement of the injection nozzle.

FIG. 5 is a plan view of a mixing jet nozzle of a conventional example.

[Explanation of symbols]

14 first feed pipe 15 first
Feeding pipe 16: 1st rotary joint 18: 2nd
Feeding pipe 19 ... Second feeding pipe 20 ... Second
Rotary johnite 22 ・ ・ ・ Ejector 24 ・ ・ ・ Injection tube 30 ・ ・ ・ Injection nozzle 32 ・ ・ ・ Ejector 34 ・ ・ ・ Rotary johnite 36 ・ ・ ・ Rotary johnite 38 ・ ・ ・ Injection tube 50 ・ ・ ・ Fluid Injecting device 54 ・ ・ ・ Forward / backward moving table 56 ・ ・ ・ Horizontal moving table 58 ・ ・ ・ Elevating body 60 ・ ・ ・ Arm 62 ・ ・ ・ Nozzle driving device 72 ・ ・ ・ Fluid supply means 74 ・ ・ ・ Control device

Continuing on the front page (72) Inventor Minori Machihata 1 Kobe Town, Fukuyama City, Hiroshima Prefecture Inside Fukuyama Kyodo Kiko Co., Ltd. (72) Inventor Tasaburo 1 Kobe Town, Fukuyama City, Hiroshima Prefecture Fukuyama Kyoki Co., Ltd.

Claims (1)

[Claims] 1. An ejection nozzle for ejecting a fluid, an arm supporting the ejection nozzle, an ejection diverting means for changing the ejection direction of the ejection nozzle, and a forward / backward moving means for moving the ejection nozzle in the front-back direction. A lateral moving means for moving the injection nozzle in a direction perpendicular to the front-rear direction in a horizontal plane, a lifting means for moving the injection nozzle up and down, and a swivel for rotating the injection nozzle about an axis parallel to the longitudinal direction of the arm. And a fluid supply means for supplying a fluid to the ejection nozzle.